Going over there in a few weeks and taking the HT.
I know it's not the Alps but there looks to be plenty local woods and trails to explore and according to the FFC web site they have 88 routes in the area ranging from green to black grade !
I've e-mailed them and the local tourist board but there's been no reply so far.
This is all the info' I can get off the FFC web site, which is the area, the number of VTT routes and the area code:
Montagrier in Périgord 88 24350 Montagrier
Interesting one though... Google mountain bike routes in Riberac and you get a link to Issue 11 of STW !!!